Sprocket-wheel



(No Model.) v

P. .D; MURPHY 80 E. KOLB.

SPROCKBT WHEEL. I No. 527,153. Patented Ocffi. 9, 1894..

"NEVA? W/TNES:SE8: I a ,6 INVENTOHI v ih W A TTOHNE Y5 UNITED STATESPATENT-I OFFICE.

PETER D. MURPHY AND EDWARD KOLB, OF LOCKPORT, NEW YORK.

SPROCKET-QWHEIIL.

SPECIFICATION forming part ofIietters Patent No. 527,153, dated October9, 1894. Applicatioufiled February 5, 1894. Serial No. 499,087. (Nomodel.)

- To all whom it may concern:

Be it known that we, PETER D. MURPHY and EDWARD KoLB, citizens of theUnited States of America, residing at Lockport, in the county of Niagaraand State of New York, have invented certain new and useful Improvementsin Sprocket-Wheels, of which the following is a specification, referencebeing had to the accompanying drawings.

This invention relates tocertaih new and useful improvements in wheelsand particularly to sprocket wheels, the following being such afull,clear, and exact description of the same as will enable others skilledin the art to which it appertains to make and use the same.

The object of said invention is to provide novel means for increasingthe diameters of sprocket wheels to compensate for the extension of thechain incident to long use, it being well known that the joints otlsuchchains become worn and that the distance between the links are greaterin consequence, thus causing the chain to run upon the sprocket teeth,and resulting in increased wear on both the wheel and the chain. p

A further object of our invention is to arrange the parts in such amanner as to make varying adjustments possible in accomplishing theresult above set forth as the wear on the chain increases andnecessitates the increased diameter, and furthermore in providing meansto this end which are strong and durable, efficient and satisfactory inuse as well as comparatively inexpensive of manufactu re.

In describing the invention in detail reference is had to theaccompanyingdrawings forming a part of this specification and whereinlike characters of reference indicate corresponding parts inboth views,in which Figure l, is a view in side elevationof a consist of metal orfibrous substance as desired and the thickness thereof being varied toproduce the result sought, the particular adjustment depending upon thechain. In most cases the plates without packing would .produce thedesired result for the first adjustment. The packing further serves tomaterially lessen the noise caused by the chain moving over the wheelespecially if leather or soft metal is used.

The advantages of the invention as well as the construction andoperation will be apparent from the foregoing description and it isparticularly noted that changes and substitutions may be made in thedetails of con struction without materially departing from the generalidea involved.

Having fully described our invention, what we claim as new, and desireto secure by Letters Patent, is I 1. A sprocket wheel having removableplates secured between the teeth in length equal to the distance betweensaid teeth for the purpose described.

2. The combination with the toothed wheel, of plates adapted to fit onthe periphery thereof between the teeth and the interposed packing forthe purpose described.

In testimony whereof we affix our signatures 1 in presence of twowitnesses.

